Eaton 3-Phase Busbar Block for 3 PKZ0 Motor Protective Circuit Breakers, 63 A, 690 V, Screw Terminal

In industrial control panels and motor control centers, electricians often need a compact and reliable way to distribute three-phase power to multiple motor protective circuit breakers. The Eaton 3-Phase Busbar Block (B3.1/3-PKZ0) is built exactly for that job: it connects directly onto three Eaton PKZ0 motor protective circuit breakers, supplying them with a common three-phase feed from a single incoming screw terminal. This eliminates individual wiring to each breaker, saving space, reducing installation time, and minimizing potential wiring errors.

Key specifications

• Product type: Busbar block for power distribution
• Compatible devices: Eaton PKZ0 motor protective circuit breakers
• Number of phases: 3-phase
• Number of devices: 3 (connects three PKZ0 breakers)
• Rated operational current (Ie): 63 A
• Rated operational voltage (Ue): 690 V AC
• Rated insulation voltage (Ui): 690 V
• Incoming connection: Screw terminal
• Outgoing connection: Direct plug-in to PKZ0 terminals
• Mounting: Direct mounting onto PKZ0 devices
• Degree of protection: IP20 (when installed)
• Conductor material: Copper
• Insulation material: Plastic
• Standards compliance: IEC/EN 60947
• Series: PKZ0 Accessories

Why choose it

This busbar block is an official Eaton accessory, ensuring perfect mechanical and electrical compatibility with PKZ0 breakers. Its robust copper conductors and high-quality insulation guarantee reliable performance even under full load. The screw terminal provides a secure and maintenance-friendly connection for the incoming supply, while the plug-in design allows quick and tool-free installation on the breaker terminals. By using this block, you achieve a neat and professional panel layout with reduced wiring complexity.

Ideal use cases

• Motor control centers (MCCs) where multiple motors are protected by PKZ0 breakers
• Industrial control panels requiring compact three-phase distribution
• Retrofitting or expanding existing installations with Eaton PKZ0 breakers
• Machine building and OEM applications with standardized power distribution

Good to know

The busbar block is rated IP20 when properly installed, meaning it is intended for use inside an enclosure that provides additional protection against dust and moisture. Always ensure that the total load current does not exceed 63 A and that the supply voltage is within the specified limits. For optimal safety, installation should be carried out by qualified personnel in accordance with local electrical codes and the manufacturer's instructions.